So my 850 makes this really loud noise when it's turned to the right at a speed of 40mph or faster. It sounds like it's coming from the left side of the car, near the driver front tire. It's like a really loud buzzing noise.. Any ideas? Thank you!

 

Some more info may help.

Buzzing sound? Shot in the dark here, wheel bearing?

 

+1. Any wobble or shimmy from the steering wheel?

 

My guess would be that your splash guard is loose and trying to cut a hole in your tire. Take the tire off and see if you see the belts coming out of the inner side of the tire and check the splash guard for wear and a missing bolt. I have lost a few good tires like that.

 

Wasp Nest under your bumper.....?

does the sound change in pitch or increase with speed?

 

the sound gets louder when the car goes faster, and theres no wheel wobbling. im going to check the splash guard thing but im not sure.. and the wheel isnt hitting the wheel well or anything.. im thinking maybe the alloy rim bent or something, slightly?